| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.jackrabbit.oak.plugins.migration.report; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Abstract class that simplifies development of a Reporter |
| * that should only report every nth event (node or property seen). |
| */ |
| public abstract class PeriodicReporter implements Reporter { |
| |
| private final int nodeLogInterval; |
| |
| private final int propertyLogInterval; |
| |
| private AtomicLong nodes = new AtomicLong(0); |
| |
| private AtomicLong properties = new AtomicLong(0); |
| |
| protected PeriodicReporter(final int nodeLogInterval, final int propertyLogInterval) { |
| this.nodeLogInterval = nodeLogInterval; |
| this.propertyLogInterval = propertyLogInterval; |
| } |
| |
| /** |
| * Reset the node and property counts to 0. Inheriting implementations |
| * may reset their own internal state. |
| */ |
| protected void reset() { |
| nodes.set(0); |
| properties.set(0); |
| } |
| |
| /** |
| * Callback called every nth time a node is accessed. |
| * |
| * @param count The count of reported nodes. |
| * @param nodeState The node that was reported. |
| */ |
| protected abstract void reportPeriodicNode( |
| final long count, @NotNull final ReportingNodeState nodeState); |
| |
| /** |
| * Callback called every nth time a property is accessed. |
| * |
| * @param count The count of reported properties. |
| * @param parent The parent node of the reported property. |
| * @param propertyName The name of the reported property. |
| */ |
| protected abstract void reportPeriodicProperty( |
| final long count, @NotNull final ReportingNodeState parent, @NotNull final String propertyName); |
| |
| |
| protected boolean skipNodeState(@NotNull final ReportingNodeState nodeState) { |
| return false; |
| } |
| |
| @Override |
| public final void reportNode(@NotNull final ReportingNodeState nodeState) { |
| if (nodeLogInterval == -1) { |
| return; |
| } |
| |
| if (skipNodeState(nodeState)) { |
| return; |
| } |
| |
| final long count = nodes.incrementAndGet(); |
| if (count % nodeLogInterval == 0) { |
| reportPeriodicNode(count, nodeState); |
| } |
| } |
| |
| @Override |
| public final void reportProperty(@NotNull final ReportingNodeState parent, @NotNull final String propertyName) { |
| if (propertyLogInterval == -1) { |
| return; |
| } |
| |
| final long count = properties.incrementAndGet(); |
| if (count % propertyLogInterval == 0) { |
| reportPeriodicProperty(count, parent, propertyName); |
| } |
| } |
| } |